Microsoft Lync & Office 365 Outage: A Reminder of Cloud Risk
July 1, 2014
Grazed from TomsITPro. Author: James Sullivan.
Last week Office 365 users received a crash course in public cloud risks. First, Microsoft’s Lync instant messaging service suffered a North American outage on Monday, June 23. This was followed by an almost nine hour outage of the company’s Exchange email service the next day, June 24.
Microsoft Lync is a business-centric communication service that provides voice over IP (VoIP), instant messaging and video conferencing, among other things; all of this behind Microsoft’s firewall. The outage has been attributed to problems that arose during a data center migration. Microsoft attempted to fix the issue by rerouting traffic to a different data center, but this ended up being a fix for only a portion of affected customers…
"The ensuing traffic spike caused several network elements to get overloaded, resulting in some of our customers being unable to access Lync functionality for an extended duration," according to Rajesh Jha, corporate vice president for Microsoft 365 engineering. The Microsoft Exchange outage was a much more confusing affair for Office 365 customers. The outage began around 9 a.m. Eastern Time and ended around 6 p.m…
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